Helfgott Roy B <br/><br/>
Labor economics 

 - New York     Random House       1974 
 - xiii,522p  cm. 
<br/><br/><label>Standard No.: </label>27968 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X:9, L4